Ducati Regulator Gilles 3

Why no failure ?
Many homebuilders may not experience regulator failures

There are two reasons :

- Many use but one tenth of the nominal power advertised by ROTAX.

- It takes 45 min for the regulator to reach its max temperature (thermal time constant on the order of 15 min)

Cooling
With a PC type fan, the regulator heat sink thermal resistance drops to about 0.5°C/W. At sea level and nominal output, the ambient temperature needs to stay below :


125 - 80×(0.5 + 0.3) = + 61°C

Much more reasonable.

See Gilles website:
http://contrails.free.fr/elec_ducati_en.php